Tantalum R05240 Fasteners are specialized fasteners manufactured from a tantalum-niobium alloy containing approximately 60% tantalum and 40% niobium. Also identified as Ta-40Nb Fasteners, 60Ta-40Nb Alloy Bolts, and UNS R05240 Tantalum Alloy Screws and Bolts, this refractory-metal alloy is selected for demanding environments where high corrosion resistance and specialized material performance are required.
We supply Tantalum Grade R05240 Fasteners in different configurations, dimensions, thread forms, and custom designs. Available products can include bolts, screws, studs, threaded rods, nuts, washers, socket head cap screws, and other machined fasteners according to project requirements.
UNS R05240 is specifically identified by ASTM B365 as a tantalum alloy containing 60% tantalum and 40% niobium. ASTM B365 covers tantalum and tantalum-alloy rod and wire and includes R05240 among its covered materials.
What Are Tantalum R05240 Fasteners?
Tantalum R05240 Fasteners are fasteners made from a tantalum-niobium alloy containing approximately 60% tantalum and 40% niobium. Also known as Ta-40Nb Fasteners and designated UNS R05240, the alloy offers specialized corrosion resistance for demanding chemical and industrial environments. R05240 can be supplied as bolts, screws, studs, threaded rods, nuts, washers, and socket head cap screws in standard or custom dimensions.
Table of Contents
- ➤ What Is Tantalum Grade R05240?
- ➤ Types of Tantalum R05240 Fasteners
- ➤ Chemical Composition of R05240 Tantalum Niobium Alloy
- ➤ Mechanical Properties of Tantalum R05240 Fasteners
- ➤ R05240 Fasteners Weight Chart
- ➤ Equivalent Grades of Tantalum R05240
- ➤ ASTM B365 R05240 Fasteners
- ➤ Why Choose Ta-40Nb Alloy Fasteners?
- ➤ Applications of Tantalum R05240 Fasteners
- ➤ Tantalum R05240 Socket Head Cap Screws
- ➤ Tantalum R05240 Fasteners Stockist and Exporter
- ➤ Why Buy Tantalum R05240 Fasteners From Us?
What Is Tantalum Grade R05240?
Tantalum Grade R05240 is a tantalum-niobium alloy commonly referred to as Ta-40Nb. ASTM identifies R05240 as an alloy containing 60% tantalum and 40% niobium, produced through electron-beam melting, vacuum-arc melting, or both under the relevant material specification.
The combination of tantalum and niobium provides a specialized refractory-metal material for applications requiring resistance to aggressive environments. R05240 is therefore used where conventional stainless steel and other common engineering materials may not provide the required material characteristics.
Types of Tantalum R05240 Fasteners
We supply Tantalum Niobium Alloy R05240 Fasteners in various configurations:
- Tantalum R05240 Hex Bolts
- Tantalum R05240 Heavy Hex Bolts
- Tantalum R05240 Machine Screws
- Tantalum R05240 Socket Head Cap Screws
- Tantalum R05240 Countersunk Screws
- Tantalum R05240 Stud Bolts
- Tantalum R05240 Threaded Rods
- Tantalum R05240 Nuts
- Tantalum R05240 Washers
- Tantalum R05240 U-Bolts
- Tantalum R05240 Custom Fasteners
- Ta-40Nb Alloy Bolts and Screws
Metric and imperial sizes can be supplied, while custom thread dimensions and machined configurations can be considered from drawings.
Chemical Composition of R05240 Tantalum Niobium Alloy
| Element | R05240 Composition |
|---|---|
| Tantalum (Ta) | 60% |
| Niobium (Nb) | 40% |
| Tungsten (W) | 0.050% max. |
| Molybdenum (Mo) | 0.020% max. |
| Oxygen (O) | 0.020% max. |
| Titanium (Ti) | 0.010% max. |
| Nickel (Ni) | 0.010% max. |
| Iron (Fe) | 0.010% max. |
| Nitrogen (N) | 0.010% max. |
| Carbon (C) | 0.010% max. |
| Silicon (Si) | 0.005% max. |
| Hydrogen (H) | 0.0015% max. |
Mechanical Properties of Tantalum R05240 Fasteners
| Property | Typical / Published Value |
|---|---|
| Tensile Strength | 275–310 MPa |
| Yield Strength, 0.2% Offset | 193–207 MPa |
| Elongation at Break | 25–40% |
| Modulus of Elasticity | Approx. 152 GPa |
| Density | Approx. 12.1 g/cm³ |
| Melting Point | Approx. 2705°C |
R05240 Fasteners Weight Chart
| Nominal Diameter | Approx. Weight per Metre |
|---|---|
| 5 mm | 0.238 kg/m |
| 6 mm | 0.342 kg/m |
| 8 mm | 0.608 kg/m |
| 10 mm | 0.950 kg/m |
| 12 mm | 1.369 kg/m |
| 16 mm | 2.434 kg/m |
| 20 mm | 3.801 kg/m |
| 24 mm | 5.477 kg/m |
| 30 mm | 8.561 kg/m |
| 36 mm | 12.308 kg/m |
| 40 mm | 15.205 kg/m |
| 50 mm | 23.758 kg/m |
Equivalent Grades of Tantalum R05240
| Designation | Equivalent / Common Identification |
|---|---|
| UNS | R05240 |
| Alloy | Ta-40Nb |
| Composition | 60% Ta – 40% Nb |
| Common Name | Tantalum-40% Niobium |
| ASTM B365 | R05240 |
| ASTM B521 | R05240 |
| ASTM B708 | R05240 |
| EN / DIN | No direct one-to-one equivalent claimed |
| Material Family | Tantalum-Niobium Alloy |
ASTM B365 R05240 Fasteners
ASTM B365 R05240 Fasteners is a useful search term for buyers looking for R05240 material, but the specification should be described accurately. ASTM B365 is titled Standard Specification for Tantalum and Tantalum Alloy Rod and Wire, and R05240 is one of the tantalum alloys covered by the specification.
For finished bolts, screws, studs, nuts, or other fasteners, the applicable product specification, dimensions, mechanical requirements, and manufacturing requirements should be confirmed separately.
This distinction is important for procurement teams because the material specification and finished-fastener dimensional/manufacturing requirements are not necessarily the same document.
Applications of Tantalum R05240 Fasteners
Why Choose Ta-40Nb Alloy Fasteners?
Ta-40Nb Alloy Fasteners are selected for applications requiring specialized tantalum-niobium material performance.
- High Tantalum Content: With approximately 60% tantalum, R05240 belongs to the tantalum-rich refractory-metal family.
- Niobium Alloying: The addition of approximately 40% niobium produces a distinct tantalum-niobium alloy rather than commercially pure tantalum.
- Corrosion-Resistant Material: Tantalum-based alloys are used in demanding chemical environments where resistance to aggressive media is an important design consideration.
- Specialized Fastener Supply: Bolts, screws, studs, threaded rods, washers, and socket head cap screws can be manufactured or supplied according to specified dimensions.
- Custom Engineering: Special thread forms, diameters, lengths, head styles, and machined configurations can be considered according to drawings and technical requirements.
Tantalum R05240 Socket Head Cap Screws
Tantalum R05240 Socket Head Cap Screws combine the R05240 alloy with a compact socket-head configuration. The internal hexagonal drive allows installation where external wrench clearance is limited.
We can supply these fasteners in different diameters and lengths, including metric and imperial requirements. Custom socket-head designs can also be considered where standard dimensions do not meet the application's requirements.
Tantalum R05240 Fasteners Stockist and Exporter
As a UNS R05240 Tantalum Niobium Fasteners Stockist, we support requirements for specialized tantalum-niobium fasteners in standard and custom configurations.
For customers seeking a Ta-40Nb Alloy Fasteners Exporter, we can coordinate material grade, dimensions, quantities, documentation, packaging, and shipping requirements.
We also supply Tantalum R05240 Fasteners for export to USA and other international markets according to project-specific requirements.
Why Buy Tantalum R05240 Fasteners From Us?
We understand that purchasing specialized refractory-metal fasteners requires accurate material identification, dimensional control, and appropriate documentation.
We support customers with:
- R05240 tantalum-niobium fasteners
- Ta-40Nb bolts and screws
- Socket head cap screws
- Metric and imperial dimensions
- Custom fastener configurations
- Material certificates
- Inspection documentation
- Export packaging
- International supply requirements
Our team can review your drawing, specification, size, quantity, and application requirements before preparing a quotation.
Get a Quote for Tantalum R05240 Fasteners
Looking for Tantalum R05240 Fasteners, Ta-40Nb Alloy Fasteners, 60Ta-40Nb Alloy Bolts, or UNS R05240 Tantalum Alloy Screws and Bolts?
Send us your required size, fastener type, quantity, specification, drawing, certification requirements, and delivery location. We can review your requirements and provide a quotation for standard or custom R05240 fasteners.
